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Finding the Fourth Proportional to 19,702.89, 27,189.89 and 10,750.31

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Solution

The fourth proportional to 19,702.89, 27,189.89 and 10,750.31 is: 14,835.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,702.89 : 27,189.89 = 10,750.31 : x
  2. Step 2: Convert to fraction form
    19,702.89/27,189.89 = 10,750.31/x
  3. Step 3: Cross multiply
    19,702.89x = 27,189.89 × 10,750.31
  4. Step 4: Simplify right side
    19,702.89x = 292,299,760.59
  5. Step 5: Solve for x
    x = 292,299,760.59/19,702.89
  6. Step 6: Final answer
    x = 14,835.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.